42679705 has 8 divisors (see below), whose sum is σ = 51261192. Its totient is φ = 34113408.

The previous prime is 42679699. The next prime is 42679711. The reversal of 42679705 is 50797624.

It is an interprime number because it is at equal distance from previous prime (42679699) and next prime (42679711).

It can be written as a sum of positive squares in 4 ways, for example, as 21261321 + 21418384 = 4611^2 + 4628^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 42679705 - 2⁷ = 42679577 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3757 + ... + 9973.

It is an arithmetic number, because the mean of its divisors is an integer number (6407649).

Almost surely, 2^42679705 is an apocalyptic number.

It is an amenable number.

42679705 is a deficient number, since it is larger than the sum of its proper divisors (8581487).

42679705 is a wasteful number, since it uses less digits than its factorization.

42679705 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7595.

The product of its (nonzero) digits is 105840, while the sum is 40.

The square root of 42679705 is about 6532.9706106793. The cubic root of 42679705 is about 349.4677761235.

The spelling of 42679705 in words is "forty-two million, six hundred seventy-nine thousand, seven hundred five".